Datasheet

Maxim Integrated │ 4
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Evaluates: MAX14970
MAX14970 Evaluation Kit
Output Preemphasis (JU7)
The characterization circuit channel A can be evaluated
with or without output preemphasis. Configure JU7 of the
characterization circuit channel A to enable/disable output
preemphasis (See Table 8).
OOB Mode Selection (JU9)
The characterization circuit provides full OOB signal sup-
port through high-speed OOB-detection circuitry. The SATA
range used can be selected through configuration of jump-
er JU8 (see Table 9). When the MODE pin is set to GND,
the SATA version 3.0 range is used. When the MODE pin
is set to VCC, the SATA version 2.6 range is used.
Calibration Traces
The bottom half of the EV kit provides two sets of cali-
bration traces that can be used for further analysis. The
lengths of the calibration traces are matched to the traces
going from the SMA connector to the characterization cir-
cuit. The first calibration trace includes a 50Ω load termi-
nation and the second calibration trace is a through trace.
*Default configuration.
*Default configuration.
SHUNT
POSITION
MODE PIN
(U2)
DESCRIPTION
1-2
Connected to
VCC
SATA version 2.6 range
is used
2-3*
Connected to
GND
SATA version 3.0 range
is used
SHUNT
POSITION
PA PIN (U2) DESCRIPTION
1-2
Connected to
+3.3V
Channel A output
preemphasis enabled
2-3*
Connected to
GND
Channel A output
preemphasis disabled
Not installed Not connected
Table 9. Jumper JU8 Function (U2 MODE)
Table 8. Jumper JU7 Function (U2 PA)